FDA to weigh easing limits on unproven peptides favored by RFK Jr. and other MAHA figures Pittsburgh Post Gazette of the Federal Food, Drug, and Cosmetic Act (FDCA).* New: An FDA decision to place 19 peptides on the unsafe list was supported by numerous documented safety concerns, former officials said. Even though demand for peptide therapies has exploded since then, FDA Moves to Reevaluate Several Peptides American Med Spa Association